The responsible business partner/manager of Ryo Saeba; she cooks, pays the bills, constantly searches for potential clients, and is also usually forced to keep Ryo's unparalleled perversions in check so he can do his job. She also secretly harbors deep romantic feelings for Ryo.

Beautiful and devious, Saeko is a high ranking Tokyo police detective. Whenever she runs into a problem that she can't handle, she cons the lecherous Ryo Saeba, the supremely talented "City Hunter" to do her job for her.